I thought it was unethical for doctors to operate upon their families.

我认为让医生给他们的家人动手术是不道德的。

《柯林斯英汉双解大词典》

You also need some XML to operate upon.

还需要一些供操作的XML。

youdao

Keep in mind, though, that the stylesheet should operate upon the structure of the incoming XML, rather than the specific data in the document.

但是切记，样式表应该对入站XML的结构进行操作，而不是对文档中的特定数据进行操作。

youdao

There is broad agreement that leaders will increasingly be called upon to operate effectively in a multi-stakeholder world.

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The approach that companies rely upon to operate their IT lacks the integration and automation needed to achieve the full economies of scale cloud computing can deliver.

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